drivers/mtd/mtdpart.c

50 	struct mtd_info *child;
56 	child = kzalloc(sizeof(*child), GFP_KERNEL);
58 	if (!name || !child) {
62 		kfree(child);
67 	child->type = parent->type;
68 	child->part.flags = parent->flags & ~part->mask_flags;
69 	child->part.flags |= part->add_flags;
70 	child->flags = child->part.flags;
71 	child->part.size = part->size;
72 	child->writesize = parent->writesize;
73 	child->writebufsize = parent->writebufsize;
74 	child->oobsize = parent->oobsize;
75 	child->oobavail = parent->oobavail;
76 	child->subpage_sft = parent->subpage_sft;
78 	child->name = name;
79 	child->owner = parent->owner;
89 	child->dev.parent = IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER) || mtd_is_partition(parent) ?
91 	child->dev.of_node = part->of_node;
92 	child->parent = parent;
93 	child->part.offset = part->offset;
94 	INIT_LIST_HEAD(&child->partitions);
96 	if (child->part.offset == MTDPART_OFS_APPEND)
97 		child->part.offset = cur_offset;
98 	if (child->part.offset == MTDPART_OFS_NXTBLK) {
100 		child->part.offset = cur_offset;
103 			child->part.offset += wr_alignment - remainder;
107 			       child->part.offset);
110 	if (child->part.offset == MTDPART_OFS_RETAIN) {
111 		child->part.offset = cur_offset;
112 		if (parent_size - child->part.offset >= child->part.size) {
113 			child->part.size = parent_size - child->part.offset -
114 					   child->part.size;
117 				part->name, parent_size - child->part.offset,
118 				child->part.size);
123 	if (child->part.size == MTDPART_SIZ_FULL)
124 		child->part.size = parent_size - child->part.offset;
127 	       child->part.offset, child->part.offset + child->part.size,
128 	       child->name);
131 	if (child->part.offset >= parent_size) {
133 		child->part.offset = 0;
134 		child->part.size = 0;
137 		child->erasesize = parent->erasesize;
142 	if (child->part.offset + child->part.size > parent->size) {
143 		child->part.size = parent_size - child->part.offset;
145 			part->name, parent->name, child->part.size);
151 		u64 end = child->part.offset + child->part.size;
156 		for (i = 0; i < max && regions[i].offset <= child->part.offset;
165 			if (child->erasesize < regions[i].erasesize)
166 				child->erasesize = regions[i].erasesize;
168 		BUG_ON(child->erasesize == 0);
171 		child->erasesize = master->erasesize;
179 	if (!(child->flags & MTD_NO_ERASE))
180 		wr_alignment = child->erasesize;
182 	tmp = mtd_get_master_ofs(child, 0);
184 	if ((child->flags & MTD_WRITEABLE) && remainder) {
188 		child->flags &= ~MTD_WRITEABLE;
193 	tmp = mtd_get_master_ofs(child, 0) + child->part.size;
195 	if ((child->flags & MTD_WRITEABLE) && remainder) {
196 		child->flags &= ~MTD_WRITEABLE;
201 	child->size = child->part.size;
202 	child->ecc_step_size = parent->ecc_step_size;
203 	child->ecc_strength = parent->ecc_strength;
204 	child->bitflip_threshold = parent->bitflip_threshold;
209 		while (offs < child->part.size) {
210 			if (mtd_block_isreserved(child, offs))
211 				child->ecc_stats.bbtblocks++;
212 			else if (mtd_block_isbad(child, offs))
213 				child->ecc_stats.badblocks++;
214 			offs += child->erasesize;
219 	return child;
252 	struct mtd_info *child;
271 	child = allocate_partition(parent, &part, -1, offset);
272 	if (IS_ERR(child))
273 		return PTR_ERR(child);
276 	list_add_tail(&child->part.node, &parent->partitions);
279 	ret = add_mtd_device(child);
283 	mtd_add_partition_attrs(child);
289 	list_del(&child->part.node);
292 	free_partition(child);
307 	struct mtd_info *child, *next;
310 	list_for_each_entry_safe(child, next, &mtd->partitions, part.node) {
311 		err = __mtd_del_partition(child);
332 	struct mtd_info *child, *next;
335 	list_for_each_entry_safe(child, next, &mtd->partitions, part.node) {
336 		if (mtd_has_partitions(child))
337 			__del_mtd_partitions(child);
339 		pr_info("Deleting %s MTD partition\n", child->name);
340 		list_del_init(&child->part.node);
341 		ret = del_mtd_device(child);
344 			       child->name, ret);
369 	struct mtd_info *child, *master = mtd_get_master(mtd);
373 	list_for_each_entry(child, &mtd->partitions, part.node) {
374 		if (child->index == partno) {
375 			ret = __mtd_del_partition(child);
387  * and registers the child MTD objects which are bound to the parent according
398 	struct mtd_info *child, *master = mtd_get_master(parent);
406 		child = allocate_partition(parent, parts + i, i, cur_offset);
407 		if (IS_ERR(child)) {
408 			ret = PTR_ERR(child);
413 		list_add_tail(&child->part.node, &parent->partitions);
416 		ret = add_mtd_device(child);
419 			list_del(&child->part.node);
422 			free_partition(child);
426 		mtd_add_partition_attrs(child);
429 		ret = parse_mtd_partitions(child, parts[i].types, NULL);
435 		cur_offset = child->part.offset + child->part.size;
585 	struct device_node *child;
608 	for_each_child_of_node(np, child)
609 		if (of_device_is_compatible(child, "nvmem-cells"))
610 			of_node_set_flag(child, OF_POPULATED);